Electrical repeatinq-bell



(No Model.) H. B. 00X.

ELEGTRIOAL REPEA-TING BELL.

No. 372,657. Patented Nov. 8, 1887;

RFZ.

lllllllllllIllllllllllllllllllliillllllllll lhvrran STATES Aren't HARRY B. COX, OF CINCINNATI, OHIO.

ELECTRICAL REPEATlNG-BELL.

SPECIFICATION forming part of Letters Patent No. 372,657, dated November 8, 1887.

Application filed March 11, 1887.

Serial No. 230,52]. (No model.)

To all whom it may concern:

Be it known that I, HARRY E. Cox, of Oincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Electrical Repeating-Bells; and Ido hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form part of this specification.

My invention relates to improvements in electric repeating or return signal-bells; and it consists of an electromagnetic gong having the armature operate double circuit-breakers, one of which is in position when the armature is at rest and the other when the electromagnets attract the armature; and it also consists in the employment and arrangement of batteries, wires, and bells, or some proper indicator, the object 01 myimprovements being to give areturn-signal at a transmittingpoint where a circuit-changer has been operated to indicate that the bell placed at a distance has sounded the signal correctly, and I accomplish the above by the means and mechanism illustrated in the accompanying drawings, in which-- Figure 1 is a front elevation of a repeating signal-bell and its connecting-wires, batteries, and distant signal-bell. Fig. 2 is a side eleva tion of the same.

Similar letters of reference parts throughout the views.

In the drawings, A represents a frame made of any suitable metal or material, and in form made preferably as shown. The frame is for the purpose of supporting the hell or indicator B, which is preferably secured by a post, 0, to the upwardlyextending portion of the frame A.

On the lelt-hand side of the frame Isecure a standard, E, in which are secured and sup ported the electro'magnets D, and below the magnets D and secured to the frame is a standard, H, having its upper portion bent at right angiesifor the reception of a regulating thumb-screw, h. Between the ends of said screw and lower portion of the standard is pivoted a pivotal rod, to which is secured indicate like an armature, G. This armature isin metallic contact through H with the frame, to the upper end of'which is adjustably secured a clapper, B, and to its lower extending end is atb tached a tension spring, J, secured to'a screwthreaded rod, i, by means of screwthreaded thumb-pieces t t. At a suitable point on the side of the armature I secure acircuit-breaker, F, which is adapted to come in contact with the contact-points m or, seen red in the binding posts M M, insulated from the base-plate. I also secure to the lelthand portion of the frame the bindingpost c, c, and c", e and 6 being insulated and a being in metallic contact with the base-plate.

At any suitable distance from the tell-tale bell or indicator I place a battery, 0, connected by a wire to the insulated post 0, and from said battery is a wire connected to a pnslrbutton, a, secured in any suitable place, and a wire connects said button to the post 6. A wire also connects said post to a battery, [2, which is also in circuit with a repeating-bell, p, and post 6, and from thence the circuit passes to the postcarrying the backstop. To complete the circuit a wire passes from the circuitbreaker M to the magnets, and from thence to the binding-post.

The bell p is located at the same station as the circuit-closer a, so that when the latter is operated, it the circuitis intact, a returnsignal will be given by the repeater. The use of the repeating-bell is of course not limited to this specific use, and the signal may be repeated in any desired circuit by connecting the latter with the proper binding-posts. \Vhen the cireuit-closerais operated, the current proceeds from the positive pole of battery to bindingpost 0, through magnet D to backstop M, thence to the armature and base-plate,

to binding-post e, throughcircuit-closer to negative pole of battery. \Vhen the repeaterarmature is drawn forward a spring on the end thereof is brought against M, closing the repeatingcircuit from positive pole of battery I) through bell p, binding-post 0, post M, armature, base-plate, post 6 to negative pole of battery I).

By the above simple arrangement it will be clearly understood that the second circuitbreaker will not be operative until the first has been, and by the arrangements of the batteries, wires, and bell, or some proper indicator the first or repeating bell will show in a second on the telltale bell orindicator whether the first or repeating bell has been correctly sounded; or, as shown, my construction may be employed to repeat its signal to another bell or indicator.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a repeating-bell, the combination of an electro-magnet, a pivoted armature therefor, said armature carrying the bell-hammer, contact-springs on the armature at each side of the pivot, contacts secured to a base-plate for engaging the springs on the front and back stroke of the armature, respectively, said contacts being the terminals of a signaling and a repeating circuit, and a retracting-spring for holding the armature normally away from the magnet and in engagement with the signalingcircuit contact, whereby the bell will be operthe bell is operated and its strokes transmitted through the repeating-circuit.

In testimony that I claim the foregoing as my own I at'fix my signaturein presence of two witnesses.

H. B. COX.

\Vitnesses:

Enocn L. STRIOKER, ALFRED HILL. 

